What's funny, is that whenever I watch the Horizons ride/any Disney ride on YouTube, it just pales in comparison. The attractions are built in 3 dimensions, as are all of the animatronics, and are meant to be seen in person. It simply does not work in 2D. You have to experience the ride to enjoy it, and the nice part is you will easily catch things you haven't seen before because of the 3 dimensional aspect of the ride. (I don't mean 3D like with glasses, just using your eyes and seeing the Hall of the Presidents. We see everything in 3D. Which is weird if you think about it.)
Universe of Energy is LONG overdue, imo, for removal. Would love to see something like Journey to the Center of the Earth attraction, or something else there. (you could combine the entire area of UoE and Wonders of Life for one serious amount of space) One of the coolest parts of the original UoE was the pre show. I have never seen anything like it since, and watching it on Youtube gives you an idea of what it was like, but seeing it in motion was very cool. It was better than the actual show, imo.
It is very interesting to me: the memories of any ride, particularly Disney/Epcot can be hugely misinterpreted. We remember things the way we want to, not the way it was. There are SO many people here that insist that Disney bring back Journey Into Imagination and Horizons, and trust me, I would love to go on those rides again, but I feel that those individuals are wrong. As a great person once said, you "keep moving forward". It's true, there are times when attractions return (Captain EO, Tiki Birds) but those are huge exceptions. Me? I LOVE Mission Space and Test Track. Did I love Horizons and World of Motion? Sure! But parks move forward, and we are all lucky to have the memories of our current favorites, as well as the older rides.
Sorry to go on, it just seems this place can get strangely negative, and I think that hating on the parks is a waste of time.